Combined mandolin and guitar.



H. G. LUIS.

COMBINED MANDOLIN AND GUITAR. APPLICATION mm mm, 1911.

3 SHEETS-#SHEET I.

fig?

avmmmtoz H. G. LUIS;

COMBINED MANDOLIN'AND GUITAR.

APPLICATION FILED mm. 1911.

1,241,639. Patented Oct. 2,1917.

3 SHEETS-SHEET 2.

HHRRY G. LUIS H. G. LUIS. COMBINED MANDOLIN AND GUITAR.

MPLICATION FILED APR. 7. 19H.

1,241,639. Patented 001;. 2,1917.

3 SHEETS-SHEET 3.

UNITED STATES PATENT onnron HARRY G. LUIS, OF SAN QUENTIN, CALIFORNIA, ASSIGNOR F FORTY-NINE'ONE- HUNDBEDTHS TOGLYDE HENDRICKS, OF SAN QUENTIN, CALIFORNIA.

CQIVIIBINEI) IHANI)QLIN AND GUITAR.

Specification of Letters Patent.

Application filed April 7, 1917. Serial No. 160,495.

To all whom it may concern:

Be it known that I, HARRY G. LUIS, a

, citizen of the United States, residing at San Quentin, inthe county of Mann and State of- California, have invented certamnew and useful Improvements in Combined Man-' dolins and Guitars, of which the following is a specification, reference being had to the accompanying drawings.

Thisinvention relates to certain improvemerits in combined mandolin and guitar and it is an Object of the invention to provide a device of this general character having novel and improved means whereby a singing tone is created.

I The invention consists in the details of construction and in the combination and arrangement of the several parts of my 11nproved musical instrument whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise-more convenient and advantageous for use, all as will be heremafter more fully set forth.

The novel features of the invention Wlll hereinafter be definitely claimed.

In order that my invention maybe the better understood I will now proceed to de scribethe same with reference to the accompanying drawings-wherein Figure 1 is a view in top plan of a musical instrument constructed in accordance with an embodiment of my invention;

Fig. 2 is an enlarged sectional vlew taken substantially on the line 2 2 of Fig. 1;

Fig. 1 is an enlarged sectional vlew taken substantially on the line 8-3 of Fig. 1;

' Fig. 4 is an enlarged sectional v ew taken substantially on the line 4.- l of F g. 1;

Fig. 5 is an enlarged sectional vlew taken substantially on the line 5-5 of Fig. 1;

Fig. 6 is an enlarged sectional view taken substantially on the line 6-6 of F g. 1;

Fig. 7 is a fragmentary longitudinal sectional view taken substantially on the line 7+7 of Fig. 4:;

Fig. 8 is a horizontal sectional view taken through the body of the instrument asherein disclosed with the back board in plan;

Fig. 9 is also a horizontal sectional view taken through the body with the face board in plan Fig. 10 is a view in elevation of the upper brace member carried by the face board;

Fig. 11 is a View in elevation of the upper brace member carried by the back board;

Fig. 12 is a view in elevation of the second brace member carried by the face board;

Fig. 13 is an enlarged sectional view taken substantially on the line 13-13 of Fig. 12; and

Fig. 141 is a view in perspective of a musical instrument constructed in accordance with a further embodiment of my invention.

As disclosed in Figs. 1 to 7 of the accompanying drawings, B denotes the body of the instrument which may be of any-suitable design but preferably of the configuration illustrated in Fig. 1,and in producing the body I find it of especial importance to have the back board 1 of maple, the-sides or bands-2 of eucalyptus and the face board 8 of white sugar pine with the grain transversely disposed. I have found by actual practice that white sugar pine results in an unusually sweet tone. structed with the combination of woods just recited it has beenfully demonstrated that a powerful sound may be created which,

when close to the instrument, is soft but loud at a distance. I

The upper portion of the body B adjacent the opposite sides thereof is provided with the scrolls 1 which afford echo chambers to increase the sounds while the lower portion of the body B adjacent one side is provided with the additional scroll 5 also affording an echo chamber.

At substantially its transverse center the body B has suitably secured to its upper end portion the neck 6 to the outer end portion of which is suitably secured the head 7 pro vided with a lateral extension 8 which serves as a sub-base head. The extension or head 8 is also suitably connected with the outer end portion of the neck 9 suitably secured to the upper portion of the body B at one side of the neck 6. The body B has also secured to its upper end portion at the opposite side of the neck 6 the guitar neck 10 to the outer end portion of which is secured the head 11. Interposed between the heads 7 and His a bracing member 12' herein disclosed as'comprising two threaded members having coacting therewith a conventional type ofturn buckle. By the use of the brace member 12 it will be at once self-evident that relative I movements of the heads 7, 8 and 11 are pre- IVith a body conproximity tothe double tail piecelfi- Ate point intermediate the strings S and S and at substantially the center. ofthe face board 3 is secured the combined tail piece and bridge 18. .Operativelyengaged withthe combined tail pieoeiand bridge118' arethe trings S which are also operatively engaged withlthe headpiece? Secured 1 to the under surface Off the. face board 3,adjacent the upper end: of the body B'isthe brace member (1 extending entirely across the body .13 .and also through the scrolld at the leftsideof thebody asseen in Fig.1, and saidbracea is disposed on an incline relative to the'longitudinalaxis of the body. Also securedv t0 theunder surface of the face board 3 is a second brace member 0. extending from one side of the bodyadjacent the-upper end thereof anditerminating at the opposite side of the body adjacent .thelowerendthercof- ,A third'bracec is secured to the under surface of the face board 3 .whiehjs positioned; below the lower end of the brace. wand is disposed lat. subtcntially right angles to the longitudinal axis of. the body.

Secured-tothe back boandrl of the body adjacent the: upperend thereofis the brace member 6 which extends entirelytaeross the body Band is arranged in :a plane intersecting the plane occupied by! the brace melnher .a. At substantially theilongitudinal center of the body B- the inner surface'of the back board: 1 has suitablysecured thereto a second brace; member d extending entirely across the body Bland substantially at. right angles to. thei longitudinal axis of the "body B. .Tbeinner suriaeeqofthe backboard l has also secu ed: thcrctoia third brace member-f also. extending entirely across the body B and arranged alien: incline relativetoi the longitudinal; axis ofi the body' and positioned interme iate the I brace {members d sand .:e. Secured t0:th innersufiace of the .back board 11 adjacent the; lower end of. the,- body Bis aifiurther brace member ,g WhiOIL-iS! disposedat ,right angles to the dongitudinal xis of-the bodymm occupies a plane intersecti-ngzthe; scroll. 5; .(Ihe inner. surface of the back board 1 coacting with the scroll 5 ,isprovided with the brace;member-h exarrangement of thewaniousbnace members hereinbefore referred to affords a body poso sessing great strength.

In order to produce a singing tone I fin'd'it of advantage to employ the tube) providedat one end with the cup-like member 20 secured to the under surface of the 7 face board 3 innnelil'iatelyben a liihb ome f? inedatailpieoe-aml bridge18, whlle the RP" I posits-end portion term nat s in. the fuanel likelatera iextensionfi arranged} ately beneath the-sound cpemng. 1e Jemima. mentzwihhx the'taihp ece and br dgexw .As :is .paxtlcularly d sclosed :1 .Fxg- 7'; the tube 19 is disposed .longltudmelly at the body B. Ithas-m fully dame stratedin practice. thatthetube Lil-Wits i concomitant parts serve to ,form #8. $6851 chamber inwhich thetom isma en cl ly, amplified so that. the, sirging or; after-tones,- willheeo increased as o i'en'dertlwfiflm l readily audible.

:Z Jn-thelform 0f myiin cntion-illu mte in;Fig.14, theibody B is co structed ID: substantially a the: same. manner, .as 1 has been.

set .forth vrelative toithe bodyiBiexcept '1; find itcfiimpcrtance tommwde tbehwax z-m endotthe body aatcppeslteisides thenectj with the imwandlydirected scrolls. 5 {Where-- yadditional echo hambersiare a The structural parts diseloseddnlF'g. 11* which correspond to parts shown a :the ID preceding figures are identified -by .corlie v spending reference characters.

Inorder to. help maintain or boldthe toned certain .of the .iiarious ;braces secured [to the back board uMHilthBiiflfi'llQQM-fi 8min provided with the lateral extensions 22' preferably positioned: atthevend of said braces.

I claim: I

1. A combined-mandolin and guitar corneal prising awhollow body having at scroll formediatthe lower enldithereof to provislec "(I an. echo -ohamber,,-;a;plurality of necks us tendingfrom the opposite end of the body, strings on --eaeb meek, the I body 1 being 1pmvided with sound openings :beneath wharf. strings and .a'tube positioned; beneath the sound opening of the central neck, bridges for the strings mounted on the body, the central bridge being positioned-11a over one end of the tube. f i

2. 'A combined. mandolin and guitar. comprising .a hollow =boidy 'having |a-ecroll at its lower. end. to pmvalde am echo-charm the body aplunality of neckslextendingl. 4

upwardly from the body between the-dash? named scrolls, a plurality of bridges 9 mounted on; the body, said. body being prim vided wath sound openings, strings con-l nected to the necks and the bridges and passing over the sound openings, and a; tube attached beneath the central bridge and extending to a point in alinement with the central sound opening.

3. A- combined mandolin and guitar comprising a hollow body having a plurality of sound openings arranged in its face, bridges attached to the body, necks extending from the end of the body opposite that to which the bridges are connected, a head connecting one pair of necks, a head on the opposite neck, a turn-buckle conopening and a horn at the end of the sound tube.

In testimony whereof I hereunto affix my 20 signature in the presence of two witnesses.

HARRY G. LUIS.

Witnesses: I

M. D. AOKLY, JEROME PHILLIPS.

copiel of this patent may be obtained for five cents each, by addressing the Commissioner of ratentl,

. Washington, D. 0. 

